14
5.5 Precabled electric connection
WARNING
Make sure that the mains supply to the unit is disconnected before
performing any installation, service, maintenance or electrical work!
The installation and service of the unit and complete ventilation system must be performed
by an authorized installer and in accordance with local rules and regulations.
The unit must be earthed.
QCmev units are wired internally from factory for two-speed operation via remote switch, not supplied (paragraph 6.1).
Unit comes pre-wired with:
- mains supply cable (3-core: brown, blue, yellow/green).
- control cable (2-core: blue, brown).
Fig. 5.i
Precabling
POWER SUPPLY
CONTROL
YELL
O
W
-GREEN
BL
UE
BROW
N
N L
BL
UE
BROW
N
1 2 3
4
V1
V2
N
L
S1 S2 S3 GND
GND POT +10
Fig. 5.j
Speed adjustment trimmers on the internal electronic board
